如何在 PHP 中执行多张图片插入和上传？ [复制]

Question

我想添加图像 goa.jpg、kerala.jpg、delhi.jpg 使用输入类型“文件”作为多个。下面的代码可以完美地插入单个图像。

现在我想使用 for 循环执行多张图片上传，但我没有得到没有错误的实际代码。有人有这方面的经验吗？

                $file_name=$_FILES["packageimage"]["name"];
                $temp_name=$_FILES["packageimage"]["tmp_name"];
                $imgtype=$_FILES["packageimage"]["type"];   if($imgtype!='image/jpeg'&&$imgtype!='image/jpg'&&$imgtype!='image/gif'&&$imgtype!='image/png'&&$imgtype!='image/bmp')
        {     $msg = "Please upload only Image file";   }
         else{ 
        $ext= GetImageExtension($imgtype);
                $imagename=date("d-m-Y")."--".time().$ext;
                $target_path = "../upload/products/".$imagename;
                move_uploaded_file($temp_name, $target_path);

// query to insert images.

        $query=mysql_query("insert into tbl_products set catid='".$catid."', packageimage='".$imagename."',  add_date=now()");
        if($query)
        {
        $msg="Product Added Successfull";
        }

当我在上面的代码中尝试使用 for 循环时，它只存储第一张图片并且只显示第一张图片。

Answer 1

请看一下您可以了解有关多次上传的所有想法 http://php.net/manual/en/features.file-upload.multiple.php

见下面的例子

<?php 
print_r($_FILES);
?>
<form action="" method="post" enctype="multipart/form-data">
  Send these files:<br />
  <input name="userfile[]" type="file" /><br />
  <input name="userfile[]" type="file" /><br />
  <input type="submit" value="Send files" />
</form>

查看结果如下

Array
(
    [userfile] => Array
        (
            [name] => Array
                (
                    [0] => cancelled booking - PAYG.png
                    [1] => cancelled booking - PAYG.png
                )

            [type] => Array
                (
                    [0] => image/png
                    [1] => image/png
                )

            [tmp_name] => Array
                (
                    [0] => C:\xampp\tmp\php402A.tmp
                    [1] => C:\xampp\tmp\php402B.tmp
                )

            [error] => Array
                (
                    [0] => 0
                    [1] => 0
                )

            [size] => Array
                (
                    [0] => 99134
                    [1] => 99134
                )

        )

)

对于您的问题，以下是 foreach

<?php 
foreach ($_FILES['userfile'] as $position => $file){
    print_r($file);

}

?>

当结果见下图：

Array
(
    [0] => cancelled booking - PAYG.png
    [1] => cancelled booking - PAYG.png
)
Array
(
    [0] => image/png
    [1] => image/png
)
Array
(
    [0] => C:\xampp\tmp\php284D.tmp
    [1] => C:\xampp\tmp\php284E.tmp
)
Array
(
    [0] => 0
    [1] => 0
)
Array
(
    [0] => 99134
    [1] => 99134
)

所以现在你可以理解了

谢谢 普拉提克

Answer 2

你可以使用multiple属性上传多个文件，像这样：

HTML

<form action="upload.php" method="post" enctype="multipart/form-data">
  <input type="file" multiple="multiple" name="packageimage[]" />
  <input type="submit" value="Upload" name="submit" />
</form>

PHP

<?php

    if(isset($_POST['submit'])){
        // directory where the files will get uploaded
        $target_dir = "upload" . DIRECTORY_SEPARATOR . "products";

        // count the number of files uploaded
        $num_of_files = count($_FILES["packageimage"]["name"]);

        // loop through each file to upload
        for($i = 0; $i < $num_of_files; ++$i){

            // valid file extensions
            $valid_extensions = array("gif", "png", "jpg", "jpeg", "bmp");

            // get the file extension
            $ext = strtolower(pathinfo($_FILES["packageimage"]["name"][$i],PATHINFO_EXTENSION));

            // now check against permissible extensions
            if(in_array($ext, $valid_extensions)){

                // target file name
                $target_file = $target_dir . DIRECTORY_SEPARATOR . date("d-m-Y") . "--" . time() . "." . $ext;

                // upload file
                if (move_uploaded_file($_FILES["packageimage"]["tmp_name"][$i], $target_file)) {
                    echo "The file ". basename($_FILES["packageimage"]["name"][$i]). " has been uploaded. <br />";

                    // do your database operations here

                } else {
                    echo "Sorry, there was an error uploading your file.";
                }
            }else{
                echo "Please upload only Image file";
            }

        }
    }

?>

旁注： 为了提供跨平台兼容性，你应该使用 PHP 的 DIRECTORY_SEPARATOR 常量来编写路径字符串，例如"..".DIRECTORY_SEPARATOR."foo"，因为在 Windows 上执行此操作的方式是 "..\foo"，而在其他所有设备（Linux、UNIX、Mac OS X）上执行此操作的方式是 "../foo"。